SPL and extension with both surpass a Seaton Submersive HP, which is my requirement baseline (I'll also have two custom Submersive F2's for balancing subs in the rear), so all my base needs are already exceeded. Just how far this subwoofer solution exceeds my required baseline remains to be measured, as it does not exist yet. But--this is not a DIY build at all.

Quote:

Originally Posted by Pain Infliction

I wouldn't be surprised if I saw a rotary sub show up in this build.

LOL, I never actually heard of that until I saw this post and googled it. Do they actually work well? I wonder.....I wouldn't mind having a few of these in the ceiling...heh heh

If I had the cash I'd do (8) double arrays of LMS Ultra 5400 18" drivers with some type of high end Pro amp that's proven to have great response into single digit frequency. 2000 or so watts to each driver. I'd have them in various locations, including some raise up near the ceiling.

I am not sure you could do better than that. Could you ? What else would ? It's like the perfect bass solution. An elegantly executed driver with anti-flux modulation shorting ring, and just ridiculous brute strength and crazy excursion. Driver + amps cost too much though I have a tough time justify that solution when a UXL 18" is half the price, and a SI18" is even half that price. The solution to great bass isn't $$$ you spend, high end brand or products, or crazy expensive drivers; it's the set up and execution of the solution, and the surface area and excursion and watts. More cheaper drivers will usually win. More drivers also means they work less hard each, and so does the amps, so less total distortion. More drivers usually means smooth and broader response too. But I do dream about what if cost was no object and you could actually do both- crazy awesome drivers and amps with some obscene amount of drivers (16+). That would just be killer and you could have your cake and eat it too for both extension and SPL.

I am curious to see your solution now that you teased me so much. I look forward to it. I am totally confused on my own bass solution. I keep flip flopping from sealed back to ported, and even playing with the idea of doing a couple mega bass horns in my riser of the second row. Ideally I want the output and low distortion, high sensitivity and efficiency of a horn with the extension of IB or Sealed but mixing them screws everything up since ported enclosure are out of phase near port tune. I am not sure sealed or IB can hit the SPL I want in my room though... so I have some tough decisions. Is your solution going to be sealed or ported? Do you have a preference for IB or sealed over ported or horns ? I'd be curious to hear your opinion on that.

-

"Too much is almost enough. Anything in life worth doing is worth overdoing. Moderation is for cowards."

Matt, how much did you look into the rotary sub? That monster is 25k if memory serves me correctly. It plays down to 1hz. There is not a single person that I know of on avs forum that has one. There probably is, but I have not come across them. I know that you are really popular on this forum already, but could you imagine how many messages and comments you would get if you put two of them in you ceiling lmao!

If I had the cash I'd do (8) double arrays of LMS Ultra 5400 18" drivers with some type of high end Pro amp that's proven to have great response into single digit frequency. 2000 or so watts to each driver. I'd have them in various locations, including some raise up near the ceiling.

I am not sure you could do better than that. Could you ? What else would ? It's like the perfect bass solution. An elegantly executed driver with anti-flux modulation shorting ring, and just ridiculous brute strength and crazy excursion. Driver + amps cost too much though I have a tough time justify that solution when a UXL 18" is half the price, and a SI18" is even half that price. The solution to great bass isn't $$$ you spend, high end brand or products, or crazy expensive drivers; it's the set up and execution of the solution, and the surface area and excursion and watts. More cheaper drivers will usually win. More drivers also means they work less hard each, and so does the amps, so less total distortion. More drivers usually means smooth and broader response too. But I do dream about what if cost was no object and you could actually do both- crazy awesome drivers and amps with some obscene amount of drivers (16+). That would just be killer and you could have your cake and eat it too for both extension and SPL.

I am curious to see your solution now that you teased me so much. I look forward to it. I am totally confused on my own bass solution. I keep flip flopping from sealed back to ported, and even playing with the idea of doing a couple mega bass horns in my riser of the second row. Ideally I want the output and low distortion, high sensitivity and efficiency of a horn with the extension of IB or Sealed but mixing them screws everything up since ported enclosure are out of phase near port tune. I am not sure sealed or IB can hit the SPL I want in my room though... so I have some tough decisions. Is your solution going to be sealed or ported? Do you have a preference for IB or sealed over ported or horns ? I'd be curious to hear your opinion on that.

I think IB is only sensible if theres another IB of equal capability in the same room. My preference is for sealed all the way! Some others love DIY subs, but its definitely not for me...

Quote:

Originally Posted by Pain Infliction

Matt, how much did you look into the rotary sub? That monster is 25k if memory serves me correctly. It plays down to 1hz. There is not a single person that I know of on avs forum that has one. There probably is, but I have not come across them. I know that you are really popular on this forum already, but could you imagine how many messages and comments you would get if you put two of them in you ceiling lmao!

I thought the grand total was 25k?? I don't remember but each application might vary in price depending on what needs to be done. Unfortunately it is out of my league and I have the perfect space for it too since my theater is surrounded by three large attic spaces.

Another thing is that the rotary sub is a good value IMO. You could spend the cost of one on subs and not get the performance of a rotary sub.

You may be right Pain. As I said, I was going of memory and that was a price that was many years old.
Yep, I was wrong. This is from Bruce Thigpen/Eminent Technology website.http://www.rotarywoofer.com/
Pricing:
TRW-17 transducer $12,900.00
Motor Controller $450.00
BT-42 Amplifier and crossover $1050.00
Design and installation, typical $8,000-$12,000*
Total $21,950-$25,950

*Note, design and installation fees include:
1. consulting engineering for the installation,
2. design and construction of the manifold at Eminent Technology
3. installation and setup of the TRW-17 by Eminent Technology
4. measurement and performance testing of the finished installation
5. travel for Eminent Technology employees
6. contractor fees for construction necesary for the installation

To me, if you can dish out that kind of money, that sounds like a good deal. You get the product, professional installation, and professional tuning. From what I gather by reading BB's threads, this sounds about what he would want.

how about a Danely matterhorn ? That's pretty much the most epic subwoofer ever. Specification is -3dB @ 12 Hz and flat from 15-80 Hz. It will do 105 dB @ 250 meters and more than 140 dB for music playback. I am not sure what it costs but I do know they used over $200 worth drill bits making it... lol